function getUrlParam(paraName) {
	      var url = document.location.toString();
	      //alert(url);
	      var arrObj = url.split("?");
	      if (arrObj.length > 1) {
	          var arrPara = arrObj[1].split("&");
	          var arr;
	          for (var i = 0; i < arrPara.length; i++) {
	              arr = arrPara[i].split("=");
	              if (arr != null && arr[0] == paraName) {
	                  return arr[1];
	              }
	          }
	          return "";
	      }
	      else {
	          return "";
	      }
	  }